Concrete cosntruction.



J. E. GONZELMAN.

CONCRETE CONSTRUCTION.

APPLICATION FILED PEB.17, 1910.

1,031,043. Patented July 2, 1912.

4 SHEETSSHEET 1.

J. B. GONZELMAN..

CONCRETE CONSTRUCTION.

APPLICATION FILED FEB.17,1910

J. E. CONZELMAN.

CONCRETE CONSTRUCTION.

APPLICATION FILED PBB.17,1910

1,031,043. Patented July 2, 1912.

4 SHEETSSHEET 3 z 11202; 1 55 1 5 CH e man,

J. E. CONZELMAN.

CONCRETE CONSTRUCTION.

APPLICATION FILED PEB.17,1910.

Patented July 2, 1912 4 SHEETS-SHEET 4,

f0fi Z3 (5112612226212,

Unrrnp STATES ITENT onnron,

JOHN E. CONZELMAN, OF SEQ. LOUIS, MISSOURI, ASSIGNOR TO UNIT CONSTRUCTION COMPANY, OF WILMINGTON, DELAWARE, A CORPORATION OF DELAWARE.

CONCRL'IE OfNSTRUCTIONJ Specification of Letters Patent.

Patented Ju ly 2, 1912.-

To all whom it may concern;

Be it'known that I, JOHN E..CONZELMAN, a citizen of the United States residing at the city of St. Louis, State ofissouri, have invented'certain new and'u seful Improvements in Concrete Construction, (Case J,) of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to concrete construction in which concrete slabs and columns are united to form a rigid and unitary structure, and has for'its object to provide a concrete structure in which each slab rests on a slab or slabs adjacent thereto, thus ob viating thenecessity of forming separate beams tosupport the slabs ashasbeen customary heretofore.

In the drawings v forming part of this specification, in which like numbers of referer'i'ce denote like art s whereyer they occur, Figure1-is aplan view; Fig. 2 is a sectional view on the line 22, Fig. 1; Figs. 3, 4, and are sectional views, showing diiferent modes -of uniting slabs to concrete columns, and Figs. 6 and 7 are perspective views, in detail, of the device used to unite the columns and slabs depicted in Fig. 5.

Each slab 1 is molded with any desired configuration. In order to strengthen the slab 1, each edge of said slab is reinforced with a flange 2, which is formed on the un der side of said slab, and the central portion of said slab may be reinforced with a beam 3 or'a plurality of such beams formed integrally therewith. A shoulder 4 is formed on theexterior surface ofoneof the'longitudinal side flanges of said slab. Each of the end flanges is provided with an offset 5, which projects out from the exterior surface of said end flange and extends only part of the length of said end flange. Each offset 5 of.a"'slab-1 rests on a shoulder 4 of a slab adjacent-thereto, the surface 6 that extends upwardly from said offset being beveled to fit against the beveled surface 7 extending np-wardly fromsaid shoulder, and the surface 8 that extends downwardly from said ofl'set being beveled to fit against the bev eled surface 9 exten ingdownwardly from said shoulder. The longitudinal side flange upon which shoulder 4 is formed is made preferably greater in depth and greater in cross-sectional area than either of the other flanges. Each end of said longitudinal flangerests on a shoulder 10 of the cap 11 of a column 12 and against the stud 13 of such column.

In Fig. 1 four panels of a structure are depicted, each of said panels consisting of two slabs 1. Each longitudinal flange 2 that is provided with a shoulder'4 is supported by two columns 12, each offset 5 being supported in the mannerhereinabove described by a shoulder 4 of a slab adjacent thereto The slabs join each other without an intermediate space for the formation of a concrete beam, as has been customary heretofore,butcut-away parts 14 in each slab at the corner adjacent a supporting column unite to form a cruciform space partly over column 12 and partly over shoulder 1.

While in F ig. 1 each floor or ceiling panel consists of two slabs, yet it should be understood that each panel can consist of a greater or less number of slabs.

As an additional strengthening means, reinforcin bars 15 are embedded in each slab preferab y near the bottom surface thereof. Bars 16 lie near the bottom surface of the enlarged longitudinal flange, and, adjacent the end thereof extend near the upper surface of said flange. and project into the space formed by the cut-away portions 14, the bar- 17 being embedded in shoulder 4. Bars 19 are embedded at intervals in said enlarged flange, each of said bars 18 being bent to encircle the bars 16 and bar 17. Each of the other flanges is reinforced with a bar 19, the bar 20 being embedded in the offset 5. Each bar 19 is supported by U-shaped bars 21, each bar 21 in the flange upon which theolfset 5 isformed being preferably bent to underlie bar 20 in said offset. Beam 3 is reinforced, also, with bars 19, which are supported at intervals by the U-shaped bars 21.

After the slabs 1 areset in place in the manner hereinabove described, plastic concrete is poured into the cruciform space formed by the cut-away parts 14, and sets therein, and unites the four slabs surrounding said space and column 12 inte ally toether. Grout or plastic cement is poured into the small crack between the slabs and, when set therein, unites the edges of said slabs integrally together. In a concrete structure formed in the manner hereinabove described, each slab rests on the adjoining slab or slabs, thereby obviating the .necessity of. providing separate beams to support the slabs in the manner heretofore customary, thus greatly reducing the cost of construction.

In Figs. 3, 4, and 5, :different modes of uniting the slabs to concrete columns are shown. In Fig. 3, the base of a column 22 rests on the topv of stud 13 of column 12, said stud being provided with slots 23 into which the U-sha d bars 24-project from the base of co umn 22. The enlarged flanges 2 of slabs 1 rest on shoulder 10.0f column 12 in such manner as to overlap stud 13 and the lower part of column 22. Said stud 13 extends preferably higher than shoulder a on slab 1 in order to allow the plastic concrete when poured into the cruciform space formed by the cut-away portions 14 to flow into and to fill the slots 23 in stud 13. The lower part of column 22 is provided with perforations 25, each of said perforat-ions containing a bar 26 which projects I into saidcruciform space from said column. Plastic concrete, which is poured into said cruciform space and into slots 23, sets thereinand unites the slabs and columns integrally together. I

In Fig. 4, the enlarged flanges rest on shoulder 10 of column 12, but the stud 13 extends preferably to the same level as shoulder 4. The cruciform space is filled with plastic concrete which sets therein and unites the slabs and column 12 integrally together. Bars 26 are embedded in the upper part of said cruciform space, and extend over column 12 because at that point the greatest stress is near the top surface. A socalled form (not shown in the drawings) is set above the top of stud 13 of column 12, in order to form a depression 27 in the concrete that fills said cruciform space. After the concrete in said cruciform space has become sufficiently hard tosupport the column 22, said form is removedand the base of col 1111111 22 is set in the depression 27 over stud 13. The lower part of column 22 is provided with slots 23 into which the U-shaped bars 24 project from the concrete in said cruciform space. After column: 22 is set in around column 22 in order to for concrete ring 36, which sets integrally with the base of column 22 and which covers the slots 23, said slots being filled with the grout orplastic concrete at thesame time that ring 36 -is panded metal 37, wire netting, or the like is embedded in said ring and preferablyextends entirely around the base of said col 'umn 22.

In Fig. 5, the castings shown in Figs. 6 and 7 are utilized instead of using a onepiece casting as heretofore. The upper casting 28 is connected by the members 30 to the lower casting 29, bolts 31 being used to secure said castings to said members. Long bolts 32 pass through perforations in the lower casting 29,'and are embedded deeply in the concrete of stud 13, thus binding said casting firmly to column .12. Said lower casting is provided with an inwardly-projecting flange 33, which forms an additional binding means by reason of said stud havingbeen set within said casting 29. In

'like manner, the bolts 34 that pass through perforations in the upper casting 28 and are embedded deeply in the concrete of the lower part of column 22 bind said column 22 firmly to'casting 28, the inwardly-projecting flange 35 affording additional means for binding said column to said casting 28 by reason of said column having been set within said casting. The enlarged flanges 2 rest on shoulder 10 of column 12 in such manner as to overlap preferably the joints between the members 30 and casting 28. Bars 26 extend beneath column 22 and through the space between the castings 28 and 29 and, also, between members 30, said bars being preferably located near the top surface of said cruciform space. plastic concrete is poured into said cruciform space and, when set therein, unites the slabs and columns integrally together.

It is to be observed that the unitary cone crcte structureherein described is suitable for use not only in buildings and not only in floors, ceilings, and other parts thereof, but, also, in the construction of bridges and all other constructions-in which it may be desirable to use the same.

I claim:

1. A concrete structure comprising a column and slabs having flanges restid g trii'eon, each of said flanges that rest on said column being provided with a shoulder to support an offset on '5 flange of an adjacent slab, each of said slabs being provided with Grout or formed; In order to strengthen ring 36, ex-

cut-away portions at the corner adjacent said column, said cut-away portions uniting to form a space. and a concrete filler for said space adapted to set integrally with the top of said column and with the edges of said slabs surrounding said space.

A concrete structure comprising a column and slabs having flanges resting thereon. each of said flanges that rest on said col umn being provided With a shoulder to sup port an oflset 'on a flange of an adjacent slab, each of said slabs being provided with cut-away portions at the corner adjacent said column, said cut-away portions uniting to form a space, reinforcing bars projecting from said slabs into said space, and a con crete filler for said space adapted to set integrally with the top of said column and the" edges of said slabs surrounding said space.

3. A concrete structure comprising a col umn and slabs having flanges resting thereon, each of said flanges that rest on said column being provided with a shoulder to support an offset on a flange of an adjacent slab, each of said slabs being provided with cutaway portions at the corner adjacent said column, said cut-away portions uniting to form a space, reinforcing bars projecting from said slabs into said space, and a concrete filler for said space adapted to set integrally with the top of said column and with the edge of saidslabs surrounding said space, there being also reinforcing bars which extend over said column and lie in said space.

4. a concrete structure comprising a col umn surmounted by a stud, there being a support on the top of said column around said stud, a plurality of slabs having flanges resting on said support and abutting said stud, each of said flanges that rest. on said support being provided with a shoulder to support an offset on a flange of an adjacent slab, each of said slabs being provided with cut-away portions at the corner adjacent said column, said cut-away portions uniting to form a space, and a concrete filler for said space adapted to set integrally with said stud and the edges of said slabs surrounding said space.

5. concrete structure comprising a column surmounted by a stud, there being a support on the top of said column around said stud, a superimposed column resting on said stud, a plurality of slabs abutting said stud and overlapping the joint between the same and said superimposed column and resting on the support surrounding said stud, said slabs having cut-away portions which unite to form a space, each of said slabs being provided with edges which interlock with the edges of the slabs adjacent thereto, and a concrete tiller for said space adapted to set integrally with said stud,

said superimposed column, and the edge of said slabs surrouinling said space.

6. A concrete structure comprlsing in combination with a pluralit of parallel rows of spaced columns, a single pair of slabs located in each quadrilateral formed by the adjacent spaced colun'ins, each slab having its outer corners resting on two of said c lumns. each pair of slabs having their inner sides in abutting engagement, and

means on each pair of slabs and means on the outer sides of the adjacent pairs of slabs for interlocking engagement with each other whereby the sides of one pair of slabs sup port the ends of an adjacent pair of slabs against downward movement.

7. A concrete structure including a plurality of parallel rows of spaced columns, a single pair of slabs located in each quadrilateral formed by the adjacent spaced columns, the slabs in each quadrilateral being" disposed at right angles to the slabs of the adjacent quadrilateral, each slab having its: outer corners resting on two of said columns. and means whereby the ends of each pair of slabs are supported from the outer adjacent side of an adjacent pair of slabs.

S. concrete structure including three pairs of spaced columns and two pairs of.

slabs, the slabs of each pair having their two outside corners resting on two columns, one of the pairs of slabs being arranged at right angles to the other pair, the outer side edge of one of the pairs of slabs being formed with a shoulder and the ends of the slabs of the other pair of slabs beingiormed with ottsets which rest on said shoulders.

9. in a concrete structure, a plurality of olumns arranged to provide a series oi" quadrilateral formations and a group of slabs arranged in each of said quadrilateral formations, the ends of the slabs of each group having oilset portions and the sides of the slabs of each group having shoulders the latter to receive and engage the oitsct portions of the ends of the slabs of adjacent groups, whereby the ends of each group of slabs are supported directly by the sides ot the slab of adjacent groups.

it). A concrete structure comprising a c lumn surmounted by a slotted stud, a superimposed column r sting on the stud, reinforcing bars piojecting from the up rimposed column into said tud &-l\ l:. raid supcrimposed column hm ing' o icuiog therein, reinforcing bars extending through said openings and extending on opposite side thereof, slabs resting on the column and di. posed in spaced relation, and a ('(lllt'lall filler for said space inclosing the roinl'm ring rods.

11. A concrete structure iucimling a olumn surmounted by a. stud, a rkl'ltn of slabs resting on the column surrounding the stud lip thereof and having their top faces extending In testimony whereof I have afiixed my above the top end of the stud, said slabs signature in presence off-two witnesses. having cutaway portions adjacent the stud,

a concrete filler which fills said cutaway JOHN CONZELMAN' portions, thereby engaging about the stud, Witnesses:

and a second column above the first column GLADYS l VALTON,

having its base projecting in said filler. ADELAIDE E. OBRIEN.

Copies 0! this patent may be obtained for five Washington, D. G

cents each, by addressing the Commissioner 0! l atnts. 

